+
+# elif GTEST_OS_FUCHSIA
+
+class FuchsiaDeathTest : public DeathTestImpl {
+ public:
+ FuchsiaDeathTest(const char* a_statement, Matcher<const std::string&> matcher,
+ const char* file, int line)
+ : DeathTestImpl(a_statement, std::move(matcher)),
+ file_(file),
+ line_(line) {}
+
+ // All of these virtual functions are inherited from DeathTest.
+ int Wait() override;
+ TestRole AssumeRole() override;
+ std::string GetErrorLogs() override;
+
+ private:
+ // The name of the file in which the death test is located.
+ const char* const file_;
+ // The line number on which the death test is located.
+ const int line_;
+ // The stderr data captured by the child process.
+ std::string captured_stderr_;
+
+ zx::process child_process_;
+ zx::channel exception_channel_;
+ zx::socket stderr_socket_;
+};
+
+// Utility class for accumulating command-line arguments.
+class Arguments {
+ public:
+ Arguments() { args_.push_back(nullptr); }
+
+ ~Arguments() {
+ for (std::vector<char*>::iterator i = args_.begin(); i != args_.end();
+ ++i) {
+ free(*i);
+ }
+ }
+ void AddArgument(const char* argument) {
+ args_.insert(args_.end() - 1, posix::StrDup(argument));
+ }
+
+ template <typename Str>
+ void AddArguments(const ::std::vector<Str>& arguments) {
+ for (typename ::std::vector<Str>::const_iterator i = arguments.begin();
+ i != arguments.end();
+ ++i) {
+ args_.insert(args_.end() - 1, posix::StrDup(i->c_str()));
+ }
+ }
+ char* const* Argv() {
+ return &args_[0];
+ }
+
+ int size() {
+ return args_.size() - 1;
+ }
+
+ private:
+ std::vector<char*> args_;
+};
+
+// Waits for the child in a death test to exit, returning its exit
+// status, or 0 if no child process exists. As a side effect, sets the
+// outcome data member.
+int FuchsiaDeathTest::Wait() {
+ const int kProcessKey = 0;
+ const int kSocketKey = 1;
+ const int kExceptionKey = 2;
+
+ if (!spawned())
+ return 0;
+
+ // Create a port to wait for socket/task/exception events.
+ zx_status_t status_zx;
+ zx::port port;
+ status_zx = zx::port::create(0, &port);
+ GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+ // Register to wait for the child process to terminate.
+ status_zx = child_process_.wait_async(
+ port, kProcessKey, ZX_PROCESS_TERMINATED, ZX_WAIT_ASYNC_ONCE);
+ GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+ // Register to wait for the socket to be readable or closed.
+ status_zx = stderr_socket_.wait_async(
+ port, kSocketKey, ZX_SOCKET_READABLE | ZX_SOCKET_PEER_CLOSED,
+ ZX_WAIT_ASYNC_ONCE);
+ GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+ // Register to wait for an exception.
+ status_zx = exception_channel_.wait_async(
+ port, kExceptionKey, ZX_CHANNEL_READABLE, ZX_WAIT_ASYNC_ONCE);
+ GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+ bool process_terminated = false;
+ bool socket_closed = false;
+ do {
+ zx_port_packet_t packet = {};
+ status_zx = port.wait(zx::time::infinite(), &packet);
+ GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+ if (packet.key == kExceptionKey) {
+ // Process encountered an exception. Kill it directly rather than
+ // letting other handlers process the event. We will get a kProcessKey
+ // event when the process actually terminates.
+ status_zx = child_process_.kill();
+ GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+ } else if (packet.key == kProcessKey) {
+ // Process terminated.
+ GTEST_DEATH_TEST_CHECK_(ZX_PKT_IS_SIGNAL_ONE(packet.type));
+ GTEST_DEATH_TEST_CHECK_(packet.signal.observed & ZX_PROCESS_TERMINATED);
+ process_terminated = true;
+ } else if (packet.key == kSocketKey) {
+ GTEST_DEATH_TEST_CHECK_(ZX_PKT_IS_SIGNAL_ONE(packet.type));
+ if (packet.signal.observed & ZX_SOCKET_READABLE) {
+ // Read data from the socket.
+ constexpr size_t kBufferSize = 1024;
+ do {
+ size_t old_length = captured_stderr_.length();
+ size_t bytes_read = 0;
+ captured_stderr_.resize(old_length + kBufferSize);
+ status_zx = stderr_socket_.read(
+ 0, &captured_stderr_.front() + old_length, kBufferSize,
+ &bytes_read);
+ captured_stderr_.resize(old_length + bytes_read);
+ } while (status_zx == ZX_OK);
+ if (status_zx == ZX_ERR_PEER_CLOSED) {
+ socket_closed = true;
+ } else {
+ GTEST_DEATH_TEST_CHECK_(status_zx == ZX_ERR_SHOULD_WAIT);
+ status_zx = stderr_socket_.wait_async(
+ port, kSocketKey, ZX_SOCKET_READABLE | ZX_SOCKET_PEER_CLOSED,
+ ZX_WAIT_ASYNC_ONCE);
+ GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+ }
+ } else {
+ GTEST_DEATH_TEST_CHECK_(packet.signal.observed & ZX_SOCKET_PEER_CLOSED);
+ socket_closed = true;
+ }
+ }
+ } while (!process_terminated && !socket_closed);
+
+ ReadAndInterpretStatusByte();
+
+ zx_info_process_t buffer;
+ status_zx = child_process_.get_info(
+ ZX_INFO_PROCESS, &buffer, sizeof(buffer), nullptr, nullptr);
+ GTEST_DEATH_TEST_CHECK_(status_zx == ZX_OK);
+
+ GTEST_DEATH_TEST_CHECK_(buffer.exited);
+ set_status(buffer.return_code);
+ return status();
+}
+
+// The AssumeRole process for a Fuchsia death test. It creates a child
+// process with the same executable as the current process to run the
+// death test. The child process is given the --gtest_filter and
+// --gtest_internal_run_death_test flags such that it knows to run the
+// current death test only.
+DeathTest::TestRole FuchsiaDeathTest::AssumeRole() {
+ const UnitTestImpl* const impl = GetUnitTestImpl();
+ const InternalRunDeathTestFlag* const flag =
+ impl->internal_run_death_test_flag();
+ const TestInfo* const info = impl->current_test_info();
+ const int death_test_index = info->result()->death_test_count();
+
+ if (flag != nullptr) {
+ // ParseInternalRunDeathTestFlag() has performed all the necessary
+ // processing.
+ set_write_fd(kFuchsiaReadPipeFd);
+ return EXECUTE_TEST;
+ }
+
+ // Flush the log buffers since the log streams are shared with the child.
+ FlushInfoLog();
+
+ // Build the child process command line.
+ const std::string filter_flag = std::string("--") + GTEST_FLAG_PREFIX_ +
+ kFilterFlag + "=" + info->test_suite_name() +
+ "." + info->name();
+ const std::string internal_flag =
+ std::string("--") + GTEST_FLAG_PREFIX_ + kInternalRunDeathTestFlag + "="
+ + file_ + "|"
+ + StreamableToString(line_) + "|"
+ + StreamableToString(death_test_index);
+ Arguments args;
+ args.AddArguments(GetInjectableArgvs());
+ args.AddArgument(filter_flag.c_str());
+ args.AddArgument(internal_flag.c_str());
+
+ // Build the pipe for communication with the child.
+ zx_status_t status;
+ zx_handle_t child_pipe_handle;
+ int child_pipe_fd;
+ status = fdio_pipe_half(&child_pipe_fd, &child_pipe_handle);
+ GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+ set_read_fd(child_pipe_fd);
+
+ // Set the pipe handle for the child.
+ fdio_spawn_action_t spawn_actions[2] = {};
+ fdio_spawn_action_t* add_handle_action = &spawn_actions[0];
+ add_handle_action->action = FDIO_SPAWN_ACTION_ADD_HANDLE;
+ add_handle_action->h.id = PA_HND(PA_FD, kFuchsiaReadPipeFd);
+ add_handle_action->h.handle = child_pipe_handle;
+
+ // Create a socket pair will be used to receive the child process' stderr.
+ zx::socket stderr_producer_socket;
+ status =
+ zx::socket::create(0, &stderr_producer_socket, &stderr_socket_);
+ GTEST_DEATH_TEST_CHECK_(status >= 0);
+ int stderr_producer_fd = -1;
+ status =
+ fdio_fd_create(stderr_producer_socket.release(), &stderr_producer_fd);
+ GTEST_DEATH_TEST_CHECK_(status >= 0);
+
+ // Make the stderr socket nonblocking.
+ GTEST_DEATH_TEST_CHECK_(fcntl(stderr_producer_fd, F_SETFL, 0) == 0);
+
+ fdio_spawn_action_t* add_stderr_action = &spawn_actions[1];
+ add_stderr_action->action = FDIO_SPAWN_ACTION_CLONE_FD;
+ add_stderr_action->fd.local_fd = stderr_producer_fd;
+ add_stderr_action->fd.target_fd = STDERR_FILENO;
+
+ // Create a child job.
+ zx_handle_t child_job = ZX_HANDLE_INVALID;
+ status = zx_job_create(zx_job_default(), 0, & child_job);
+ GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+ zx_policy_basic_t policy;
+ policy.condition = ZX_POL_NEW_ANY;
+ policy.policy = ZX_POL_ACTION_ALLOW;
+ status = zx_job_set_policy(
+ child_job, ZX_JOB_POL_RELATIVE, ZX_JOB_POL_BASIC, &policy, 1);
+ GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+
+ // Create an exception channel attached to the |child_job|, to allow
+ // us to suppress the system default exception handler from firing.
+ status =
+ zx_task_create_exception_channel(
+ child_job, 0, exception_channel_.reset_and_get_address());
+ GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+
+ // Spawn the child process.
+ status = fdio_spawn_etc(
+ child_job, FDIO_SPAWN_CLONE_ALL, args.Argv()[0], args.Argv(), nullptr,
+ 2, spawn_actions, child_process_.reset_and_get_address(), nullptr);
+ GTEST_DEATH_TEST_CHECK_(status == ZX_OK);
+
+ set_spawned(true);
+ return OVERSEE_TEST;
+}
+
+std::string FuchsiaDeathTest::GetErrorLogs() {
+ return captured_stderr_;
+}
+
+#else // We are neither on Windows, nor on Fuchsia.